Chickens express three variations for feather color: white, black, and black and white speckled. The genotypes are below: WW = white
BB = black
WB or BW = black and white speckled

Which conclusions about these two traits are valid?

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it

D. pray lands grasslands swamps

He used pea plants to study the patterns of heredity.